Антенны

A4S/A3S

Антенны этих серий хорошо известны радиолюбителям и пользуются заслуженной популярностью. Антенны A3S и A4S являются трехдиапазонными антеннами для работы на 28, 21 и 14 МГц.Антенны поставляются полностью настроенными и становятся работоспособными непосредственно после правильно произведенной сборки. Как и в остальных антеннах Cushcraft, все несущие элементы конструкции этих антенн выполнены из нержавеющей стали, что обеспечивает очень высокую надежность конструкции. Антенны этих серий имеют относительно небольшой вес и габариты, что позволяет их использовать с самыми простыми поворотными устройствами.

Модель	A4S	A3S
Диапазон частот, м	20, 15, 10	20,15,10
Количество элементов	4	3
Коэффициент усиления, dBi	8.9	8
Коэффициент усиления при высоте подвеса антенны 1дл. волны, dBi	25
Типичный минимальный КСВ	1.2
Ширина полосы рабочих частот по КСВ 1.5:1, кГц	>500	>500
Максимальная пиковая мощность,Вт	2000
Ширина луча по уровню -3дБ	58	60
Длина траверсы, м	5.48	4.27
Длина элементов, м	9.75	8.45
Диаметр элементов, см	3.18	3.18
Радиус разворота, м	5.49	4.72
Максимальный диаметр мачты, см	3.18-5.08	3.18-5.08
Площадь ветровой нагрузки, м2	0.51	0.47
Вес	16.8	12.9

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AV-640

Hy-Gain's new AV-640 Patriot HF vertical is the best built, best performing and best priced multiband vertical available today. Make full use of your sunspot cycle with the Patriot's low angle signal. The AV-640 uses quarter wave stubs on 6, 10, 12, and 17 meters and efficient end loading coil and capacity hats on 15, 20, 30, 40 meters. Instead of typical lossy can traps, the AV-640 resonators are placed in parallel not in series. End loading of the lower HF bands allows efficient operation with a manageable antenna height.
No Ground or Radials Needed
Effective counterpoise replaces radials
End fed with broadband matching unit
Automatic Bandswitching
Single coax cable feed
Each band is individually tunable
Wide VSWR bandwidth
Sleek and low-profile
Low wind surface area
Small area required for mounting
Mounts easily on decks, roofs, and patios
Built to Last
High wind survival
Matching unit made from all Teflon(R) insulated wire
Hy-Gain Warranty
Two year limited warranty
All replacement parts in stock

AV-640 Specifications
Bands Covered:	6, 10, 15, 17, 20, 30, and 40 Meters
2:1 VSWR Bandwidth
40 Meter:	150 KHz
30 Meter:	175 KHz
20 Meter:	500 KHz
17 Meter:	500 KHz
15 Meter:	500 KHz
12 Meter:	500 KHz
10 Meter:	1500 KHz
6 Meter:	1500 KHz
VSWR at resonance (typical):	1.5:1
Power Handling (Watts output): key down 2 minutes	1500W
Vertical Radiation Angle:	17 degrees
Horizontal Radiation Angle:	360 degrees
Height:	25.5 feet
Weight:	10.5 pounds
Wind surface area:	2.5 square feet
Wind Survival:	80 MPH

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TH-11DX

11-Element Broadband 5-Band Super Thunderbird Beam for 10, 12, 15, 17, and 20 Meters. The TH-11DX is designed to give the maximum DX performance to the serious amateur. Features a lossless log-periodic driven array on all bands with monoband reflectors. Includes high power BN-4000 balun which contributes to produce a maximum power rating of 2000 Watts continuous duty, 4000 Watts PEP on all modes. The TH-11DX also features a new corrosion resistant wire boom support system, hot dipped galvanized and stainless steel parts. Stainless steel hardware and clamps are used on all electrical connections.

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R8

HF Multiband Vertical Antenna - 6, 10, 12, 15, 17, 20, 30, 40 Meters Cushcraft is pleased to announce the introduction of the R8, it's newest multiband HF vertical antenna. This most contemporary of multiband vertical designs provides 8 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30 and 40 meter bands.
Cushcraft has achieved a major breakthrough in the development of an HF multiband vertical antenna that has been specifically designed for use with a tuner and amplifier. As a result, the antenna more accurately addresses the needs of the contemporary ham shack. Multiband vertical antennas have always been complicated designs with components as likely to be damaged by high levels of mismatched transmit power as the rigs they are attached to.
Before the use of tuners became widespread, the antenna was protected by the same safety mechanisms that protected the rig. Now, the automatic power reduction circuits of of the past have actually become a second layer of protective circuitry. Although the auto-tuner provides the ham with a more versatile device as well as protecting the rig's components, the antenna is more vulnerable than ever. With the press of a button, unmanageably high loads can be transmitted up to the antenna. The result to the antenna can be catastrophic failure in some instances.
The R8 is the first multiband vertical designed for the rigors of contemporary operating conditions. Although the antenna is best operated within it's 2.0:1 VSWR bandwidth, it can sustain a 3.0:1 VSWR mismatch at full power for typical operating intervals.
Now the ham can take full advantage of the versatility that a tuner used in conjunction with a multiband HF vertical antenna can give him.

Model	R8
Frequency, meters	6,10,12,15,17,20,30,40
Gain, dBi	3
Height, ft(m)	28.5 max. (8.7)
Horizontal rad, deg	360
Power Rating, Watts CW	1500
Vertical Radiation Angle, deg	>16
VSWR 2:1 bandwidth, KHz 10m	>1500
VSWR 2:1 bandwidth, KHz 12m	>100
VSWR 2:1 bandwidth, KHz 15m	>450
VSWR 2:1 bandwidth, KHz 17m	>100
VSWR 2:1 bandwidth, KHz 20m	>350
VSWR 2:1 bandwidth, KHz 30m	>50
VSWR 2:1 bandwidth, KHz 40m	>150
VSWR 2:1 bandwidth, KHz 6m	>1500
VSWR at resonance (typical)	1.3:1
Weight, lb(kg)	23(10.5)
Wind Survival mph(kph)	80mph

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